/r/dontstickyourdickinit: DON'T - August 29, 2022 - 21:25
/r/mechanical_gifs: 100% Non-Organic .gifs - This sub is for .gif/.gifv/silent .mp4 images that contain a subject matter of mechanical origin. - August 29, 2022 - 10:28
/r/EngineeringPorn: Engineering Porn - August 29, 2022 - 11:36
/r/dontputyourdickinthat: dontputyourdickinthat - Don't do it! This subreddit is for things that are... well... not to be penetrated. - August 29, 2022 - 11:29